braun



(No Model.) a 2 Sheets-Sheet 1. J. BRAUN & H. DECK.

LAWN MOWER.

No. 456,471. Patented July 21 1891.

WITNESSES: VENTORS gawk? hL-H I ATTORNEY.

(No Model.) 2 Sheets-Sheet 2.

J. BRAUN & H. DECK. LAWN MOWER.

Ila-456,471. Patented July 21-, 1891.

MINI! u WIN/E8858: Gavan UNITED STATES PATENT OFFICE.

JOHN BRAUN AND HENRY DECK, OF PHILADELPIIIA, PENNSYLVANIA, ASSIGNORS TOJOHN BRAUN & SONS, OF SAME PLACE.

LAWN-MOWER.

3.PECIFICATION forming part of Letters Patent No. 456,471, dated July21, 1891.

Application filed January 17, 1891.

T0 aZZ whom, it may concern.-

Be it known that we, JOHN BRAUN and HENRY DECK, citizens of the UnitedStates, both residing in the city and county of Philadelphia, State ofPennsylvania, have invented a new and useful Improvement in Lawn-Mowers, which improvement is fully setforth in the followingspecification and accompanying drawings.

Our invention relates to improvements in lawn-mowers; and it consists ofmechanism substantially as hereinafter described for either connectingor disconnecting the operating train of gearing of the knife-cylinderand the running wheels of the device.

It further consists of the combination of parts hereinafter set forth.

Figure 1 represents a perspective view of a lawn-mower embodying myinvention. Fig. 2 represents a longitudinal section of the parts of themechanism embraced in my invention. Fig. 3 represents a modification ofthe same. Fig. 4: represents a perspective view of detail parts of thedevice. Fig. 5 represents a perspective view of the outer face of thegearbox, showing the lock. Fig. 6 represents a perspective view of adetail part. Fig. 7 represents a sectional view on line .1: ac, Fig. 2.Fig. 8 represents a partial side and partial sectional view of thepawl-holder with pawl.

Similar letters of reference indicate corresponding parts in the severalfigures.

Referringto the drawings, A designates a lawn-mower having the runningwheels B, with the axle C, the knife-cylinder D, and the roller E, allof usual and well-known construe tion, the said knife-cylinder beingoperated by means of a train of gearing located in the gear-box G, whichlatter is secured to the axle (J. Journaled in the said box G is agear-wheel II, having a hub or sleeve portion J, which is slotted at Kon opposite sides thereof. The body of the said wheel is also providedwith a circular collar or flange L, surrounding the sleeve J and forminga recess M. Mounted on the sleeve or hub J is a gearwheel N, having asleeve portion P, adapted to contact with the collar L, and having itsinner wall provided with the ratchet-teeth Q, adapted to engage the endsof st--.pawl R,

Serial No. 378,105. (No model.)

which loosely rests in the slotted end of a holder S and the slots K ofthe sleeve J. The said holder S consists of a slotted stem or pinadapted to be inserted through the side of the box G and into thejournal or hub J of the wheel ll, and is provided with a head T, bymeans of which the said holder may be readily operated. The slots K areof greater length than the width of the pawl R, so as to permit thelongitudinal movement of the holder S.

Pivoted to the outer side of the box G is a lock U, having a recess inits under face coinciding with the periphery of the holder, so that.when the latter is operated so that the pawl is removed from contactwith the ratchetteeth, as in the position shown in Fig. 2, the lock,when its free end engages the stud V, will prevent the said holder frombeing moved inward.

WV designates guides for the holder, the same being connected with theouter face of the box G, and having their inner faces conforming to theshape of the head T of the said holder. It will be noticed that when theholder is inserted in the box G and sleeve J so that the ends of thepawl R are in contact with the ratchet-teeth Q, the rotation of thegear-wheel N which, as is usual in devices of this character, is incontact with a gear-wheel connected with a running wheel B, will rotatethe sleeve J along with the wheel II, and thereby the usual wheel on theknife-cylinder of the mower, so as to rotate the latter. The slot in theholder in which the pawl R is inserted is of such shape as to permit arocking motion of the pawl therein and thereby permit the backwardmovement of the said wheel N without rotating the sleeve J andgear-wheel ll, so that in the backward movement of the running wheelsthe knifecylinder is not rotated.

hen it is desired to stop the movement of the knife-cylinder during theforward movement of the running wheels, the holders S are drawn out andlooked, as shown in Fig. The ends of the pawl R being no longer incontact with the ratchet-teeth Q, the rotation of the latter does notaifect the sleeve or hub J nor the wheel II.

In Fig. 3 a modification is shown wherein the main gear-wheel H of theoperating-train is secured to the gear-wheel C, that connects with therunning-wheel gear by means of a 5 disk D, having the pins E, whichenter openings in said gear-wheels H and O,the holder or shaft F havingan inner bearing on the casing of the gear-box.

Having thus described our invention,what

[O we claim as new, and desire to secure by Letters Patent, is

l. A lawn-mower having an axle with a gear-box thereon, a gear-wheeljournaled in said box having a slotted hub with a surr 5 roundingrecess, a gear-wheel on said hub and having a sleeve adapted to contactwith said hub and with ratchet-teeth thereon, a slotted holder adaptedto be inserted through the said gearbox, and a pawl in said slotted 2oholder and engaged by said ratchet-teeth, said parts being combinedsubstantially as described.

2. A lawn-mower having a gear-boxon the axle thereof, a gear-wheeljournaled therein having a slotted-hub, and a surrounding circularcollar forming a recess, a gear-wheel mounted on the said hub andprovided with a slotted sleeve and ratchet-teeth, a holder with slottedend, a pawl resting loosely in 0 said slotted end and slotted sleeve,and a lock for said holder, said parts being combined substantially asdescribed.

3. In a lawn-mower, the combination of a gear-box attached to an axle, agear-wheel journaled in said gear-box having a slotted hub or sleeveconnected therewith, a circular collar on the body of said wheelsurrounding the said sleeve and forming a recess, a gearwheel mounted onthe hub having a sleeve adapted to contact with the said collar and withratchet-teeth on its inner wall, a slotted holder adapted to be insertedthrough the side of the said gear-box, and a pawl resting loosely insaid slotted holder and adapted to be engaged by the said ratchet-teeth,substantially as described.

4. A support, a gear-wheel j ournaled therein and having a slottedsleeve on one side, a gear-wheel journaled on said sleeve and providedwith ratchet-teeth, a holder with slotted stem movable in saidfirst-mentioned gearwheel and sleeve, and a pawl in said holder havingits ends adapted to be engaged by the ratchet-teeth, said parts beingcombined substantially as described.

5. A support, a gear-wheeljournaled therein and having a slotted sleeve,a second gearwheel mounted on said sleeve and having ratchet-teeth, aholder with slotted stem,and a pawl in said slots having its endsadapted to be engaged by said ratchet-teeth, said holder being movableendwise in its bearings, said parts being combined substantially asdescribed.

JOHN BRAUN, HENRY DECK.

Witnesses:

JOHN A. WIEDERsHEIM, A. P. JENNINGS.

